A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5975-01-099-6418
NSN 5999-01-465-6718
NSN 5925-00-462-7481
NSN 7035-00-205-1932
NSN 5935-01-399-2574
NSN 6150-01-350-7901
NSN 6320-00-004-9158
NSN 2925-01-066-5231
NSN 5930-01-570-2655
NSN 6130-01-442-4091
NSN 6610-01-462-5980
NSN 6645-01-626-3651